23178313 has 2 divisors, whose sum is σ = 23178314. Its totient is φ = 23178312.

The previous prime is 23178301. The next prime is 23178341. The reversal of 23178313 is 31387132.

It is an a-pointer prime, because the next prime (23178341) can be obtained adding 23178313 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17665209 + 5513104 = 4203^2 + 2348^2 .

It is a cyclic number.

It is not a de Polignac number, because 23178313 - 2²¹ = 21081161 is a prime.

It is not a weakly prime, because it can be changed into another prime (23178373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11589156 + 11589157.

It is an arithmetic number, because the mean of its divisors is an integer number (11589157).

Almost surely, 2^23178313 is an apocalyptic number.

It is an amenable number.

23178313 is a deficient number, since it is larger than the sum of its proper divisors (1).

23178313 is an equidigital number, since it uses as much as digits as its factorization.

23178313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 28.

The square root of 23178313 is about 4814.3860460084. The cubic root of 23178313 is about 285.1197321891.

The spelling of 23178313 in words is "twenty-three million, one hundred seventy-eight thousand, three hundred thirteen".